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磁性离子交换(MIEX)树脂通常作为一种吸附剂去除水体中的污染物,较小的尺寸、带有磁性的性质以及简单的再生过程使其有别于传统的离子交换型树脂。在之前的研究中,MIEX树脂可高效去除DOC及溴离子,因此可以有效控制消毒副产物的生成。同时,MIEX树脂对常见微污染物和金属离子也有一定的去除。MIEX树脂与常规工艺结合,不仅可以提高对有机物的去除率,还减少了后续混凝剂或氧化剂的投加量。此外,MIEX树脂还可与混凝或活性炭工艺相结合解决制约膜工艺发展的膜污染问题。主要介绍了MIEX水处理技术的原理及其对消毒副产物前驱物、无机离子和微污染物的去除特性,并对其与常规工艺相结合做了简要介绍,对未来MIEX水处理技术的研究起到一定参考作用。
Magnetic ion exchange (MIEX) resins are often used as adsorbents to remove contaminants in water bodies. Their small size, magnetic properties and simple regeneration make them different from traditional ion exchange resins. In previous studies, MIEX resins efficiently removed DOC and bromide ions, thereby effectively controlling the generation of disinfection by-products. At the same time, MIEX resins also remove some common micro-pollutants and metal ions. MIEX resins, combined with conventional processes, not only increase the removal rate of organic matter, but also reduce the dosage of subsequent coagulants or oxidizers. In addition, MIEX resins can be combined with coagulation or activated carbon processes to solve membrane fouling problems that constrain membrane technology development. The principle of MIEX water treatment technology and its removal of precursors, inorganic ions and micro-pollutants in disinfection by-products were introduced. The introduction of MIEX water treatment technology and its combination with conventional technology were briefly introduced. To a certain reference effect.